Two Levels of Respiration
Respiration
The function of the respiratory system of
the body is to take in __________ which can
be represented by the chemical
symbols_______.
The lungs transfer this chemical to the
_________ so it can be delivered to every cell
of the body.
Digestion
The function of the digestive system is to
take in__________________and break them into
small pieces so they can be absorbed by the
intestines into the _________ and carried to
every cell in the body.
Cellular Respiration
The circulatory system pumps the blood to
deliver ______________ and ________________ to
every cell. The cells use these to provide
energy for the cells to function and grow. The
process that cells use to get the energy is
called CELLULAR RESPIRATION.
Build a model of glucose
Each atom is represented by a different
H-C=O
color of foam.
carbon (C) green
H-C-O-H
oxygen (O) blue
hydrogen (H) pink
H-O-C-H
H-C-O-H
H-C-O-H
H-C-O-H
H
Connect the C, H, and O atoms with toothpicks
that represent the chemical bonds. Where there
are two lines, use two toothpicks to represent the
double bond. This is a model of glucose, a sugar
which we will use to represent the sugars and other
nutrients that a cell might use for energy.
O=O
O=O O=O O=O
O=O O=O
Molecular
Oxygen
Count out 12 more blue foam
oxygen atoms. Connect them in
pairs to form 6 O2. Use a double
bond for each pair.
Besides energy, two products are produced when glucose is
broken down during cellular respiration. Using all the foam
atom pieces in the glucose and oxygen molecules you have
built, build as many carbon dioxide and water molecules as you
can.
Carbon dioxide
O=C=O
Water
H-O-H
How many of each did you build? ____ CO2
____ H2O
Which of these is carried by the blood back to the lungs where
it is exhaled? _______________ If the body has excess water, it
is gotten rid of by the kidneys.
Fill in the chemical reaction below to show what happens
inside the cells. Include the number of each molecule involved
or produced with a number before the chemical.
+
+
+
ENERGY
What two chemicals found in tobacco smoke interfere with
this process? ___________________ and ___________________